Unverified50% confidenceFactExact time
诺贝尔经济学奖得主 Joshua Angrist 利用越战征兵彩票号码作为工具变量研究服役与收入关系
1
Sources
50%
Confidence
Long-term
Relevance
7/8/2026
First Seen
Sources
为观察性证据正名:当随机对照试验无法回答一切
hackernewshackernews7/1/2026
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